Project Management Sites
http://www.AgileSherpa.org -- an agile community website that provides a guide to the best agile resources available online.
The following 3 websites are pages I've used in the past to help people get more familiar with what makes a 'good' user story. Since 'good' is a subjective term, and there is always a balance between not enough info which can be frustrating versus lots of details sometimes scare people off.
More links to be posted soon .... In Progress